Fix additional gcc 4.2 value not used warnings.

On x86 it gives same performance, while code size shrinks >10 times.

Submitted by: Victor B. Wagner <vitus@cryptocom.ru>

achieved by minimizing link relocations].

understand inline, while WIN32 ones insist on __inline. Well, there are
other compilers that insist on __inline. At the same time it turned out
that most compilers understand both __inline and inline. I could find
only one that doesn't understand __inline, Sun C. In other words it seems
that __inline as preferred choice provides better coverage...

PR: 1296

T[ed]4 prefetch.

PR: 1318

BN_mul failures at certain key-length mixes.
PR: 1427

PR: 1177

is fixed now.